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Connection PXC22.D

hello
I have a PXC22.D, the interface Echelon U10 and Xwork 4.10
In NW Configurator when I try to connect to PXC22.D, I get an error message:
"Can not open Lon device (LON1)
Another program is using this device.Disconnect this program from the network"

Hello
i have the loytec interface NIC709-USB100 ,but when in Network Configurator I make Node setup and i search the device when i press configure i receive a error messenger " The bacnet device configuration failed!"